CN105648133B - Smelting equipment and smelting process - Google Patents
Smelting equipment and smelting process Download PDFInfo
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- CN105648133B CN105648133B CN201410645823.XA CN201410645823A CN105648133B CN 105648133 B CN105648133 B CN 105648133B CN 201410645823 A CN201410645823 A CN 201410645823A CN 105648133 B CN105648133 B CN 105648133B
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Abstract
The invention discloses a kind of smelting equipment and smelting processes, the equipment includes: horizontal tower bottom, it limits molten bath, the horizontally spaced open form in molten bath is at steel-making area and ironmaking area, along iron pelagic division, slag blanket area and coke layer area is sequentially formed from bottom to top, steel-making area is exported by molten iron to be connected with iron pelagic division in ironmaking area；Reduction tower eventually, lower end are connected with the top in ironmaking area, and top is equipped with the first concentrate burner；Oxygen lance is embedded in steel-making area from horizontal tower bottom upper end；First flue, bottom end are connected with the top in ironmaking area；Prereduction tower, upper end are connected with the upper end of the first flue, and top is equipped with the second concentrate burner；Second flue, lower end are connected with the lower end of prereduction tower chamber；Drying tower, the upper end are connected with the upper end of the second flue, and top is equipped with wet iron ore entrance；And third flue, lower end are connected with the lower end of drying tower.The equipment can significantly improve Ferrous Metallurgy efficiency, and realize clean manufacturing.
Description
Technical field
The invention belongs to ironmaking technology fields, specifically, the present invention relates to a kind of smelting equipment and smelting processes.
Background technique
Steel and iron industry is usually to carry out ironmaking using blast furnace and made steel using converter, and burn to iron-smelting raw material
Knot, and the coke through coking is largely used, there are long flow path, low efficiency, energy consumption is high, invests the problems such as big and environmental pollution, because
This existing smelting technique is further improved.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is to propose a kind of smelting equipment and smelting process, which can significantly improve Ferrous Metallurgy efficiency, and realize
Clean manufacturing.
In one aspect of the invention, the invention proposes a kind of smelting equipments, comprising:
Horizontal tower bottom, the horizontal tower lowest limit make molten bath, the horizontally spaced open form in molten bath at steel-making area and
Area is smelted iron, along iron pelagic division, slag blanket area and coke layer area is sequentially formed from bottom to top, the steel-making area passes through iron in the ironmaking area
Water out is connected with the iron pelagic division；
Eventually reduction tower, it is described eventually reduction tower in limit eventually reduction tower chamber, it is described eventually reduction tower lower end with it is described horizontal
The top in the ironmaking area of tower bottom is connected, and the top of the tower of reduction eventually is equipped with the first concentrate burner, and first concentrate burner is used
In the supply pre-reduced iron ore in sand form into the tower of reduction eventually and the fuel including coke, fine coal and oxygen；
Oxygen lance, the oxygen lance are embedded in the steel-making area from horizontal tower bottom upper end；
First flue, the bottom end of first flue are connected with the top in the ironmaking area at the horizontal tower bottom；
Prereduction tower, limits prereduction tower chamber in the prereduction tower, the upper end of the prereduction tower chamber and described the
The upper end of one flue is connected and the top of the prereduction tower is equipped with the second concentrate burner, and second concentrate burner is used for institute
It states and supplies dry iron ore in prereduction tower；
Second flue, the lower end of second flue are connected with the lower end of the prereduction tower chamber；
Drying tower, limits drying tower chamber in the drying tower, the upper end of the drying tower chamber and second flue
Upper end is connected and the top of the drying tower is equipped with wet iron ore entrance；And
Third flue, third flue lower end are connected with the lower end of the drying tower chamber.
Smelting equipment according to an embodiment of the present invention by by the reduction of end of iron ore, prereduction and drying process in one
Change and carried out in equipment, the high-temperature flue gas that reduction tower generates eventually is allowed to carry out pre-reduction treatment to the material in prereduction tower,
And the secondary low-temperature flue gas that prereduction tower generates can be dried material in drying tower, realize recycling for flue gas, into
And the discharge of pernicious gas is substantially reduced, to realize clean manufacturing, and by the way that flue gas recirculation utilization can be significantly improved
The utilization rate of flue gas, and then it is substantially reduced the investment of energy consumption, to significantly reduce smelting cost, while in each reaction process
In, so that material is in floating state, the contact area between material and reducing gas is increased, so as to significantly improve smelting
Efficiency is refined, in addition, spraying into pure oxygen to the steel-making area at horizontal tower bottom using oxygen lance, molten steel molten iron can be converted to, completed
The chemical reaction of steel-making, and the difficulty that molten iron is smelt molten steel is significantly reduced, so that steel-making is easy to carry out, and can be effective
The impurity in molten iron is removed, to obtain the steel product of high quality.
In addition, smelting equipment according to the above embodiment of the present invention can also have the following additional technical features:
In some embodiments of the invention, the smelting equipment further comprises: first material transmission device, described
One material conveying device is connected with the prereduction tower and first concentrate burner respectively, and for accepting from the prereduction
The pre-reduced iron ore in sand form of the intracavitary discharge of tower, and the pre-reduced iron ore in sand form is supplied to the reduction tower eventually；And second material
Transmission device, the second material transmission device are connected with the drying tower and second concentrate burner respectively, and for holding
The drying iron ore from the intracavitary discharge of the drying tower is connect, and the dry iron ore is supplied to the prereduction tower.As a result,
Efficiency can be significantly improved.
In some embodiments of the invention, the smelting equipment further comprises: waste heat boiler, the waste heat boiler with
The upper end of the third flue is connected, and for recycling the heat in the flue gas through third flue discharge.Thus, it is possible to real
Existing resource maximally utilizes.
In some embodiments of the invention, the smelting equipment further comprises: pig moulding machine, the pig moulding machine with it is described
The steel-making area at horizontal tower bottom is connected, and forms for obtaining molten steel to the steel-making area, to obtain steel ingot.As a result, may be used
Molding steel ingot is prepared.
In some embodiments of the invention, the smelting equipment further comprises: hot wind fine coal nozzle, the hot wind powder
Coal nozzle is set to the boundary that the ironmaking area is in the slag blanket area, the coke layer area or the slag blanket area and coke layer area
On the side wall at place.Thus, it is possible to restore the unreduced iron ore in slag blanket area or coke layer area further, to further mention
High efficiency.
In some embodiments of the invention, the wet iron ore entrance is equipped with wet ore in sand form throwing machine.
In another aspect of the invention, the invention proposes a kind of smelting processes using above-mentioned smelting equipment, comprising:
The intracavitary penetrating prereduction of tower is restored eventually to described from the top of the tower of reduction eventually by first concentrate burner
Iron ore and fuel including coke, fine coal and oxygen；
Iron is dried from the top of the prereduction tower to the intracavitary penetrating of the prereduction tower by second concentrate burner
Ore in sand form；
Wet iron ore is added from the top of the drying tower to the drying tower is intracavitary by the wet iron ore entrance；
Oxygen is sprayed into the steel-making area at the horizontal tower bottom by oxygen lance；
By the intracavitary flue gas of the reduction tower eventually be delivered at the top of first flue in the prereduction tower so as to
The drying iron ore intracavitary to the prereduction tower carries out prereduction；And
The intracavitary flue gas of the prereduction tower is delivered in drying tower at the top of second flue so as to described
The intracavitary wet iron ore of drying tower is dried.
Smelting process according to an embodiment of the present invention by by the reduction of end of iron ore, prereduction and drying process in one
Change and carried out in equipment, the high-temperature flue gas that reduction tower generates eventually is allowed to carry out pre-reduction treatment to the material in prereduction tower,
And the secondary low-temperature flue gas that prereduction tower generates can be dried material in drying tower, realize recycling for flue gas, into
And the discharge of pernicious gas is substantially reduced, to realize clean manufacturing, and by the way that flue gas recirculation utilization can be significantly improved
The utilization rate of flue gas, and then it is substantially reduced the investment of energy consumption, to significantly reduce smelting cost, while in each reaction process
In, so that material is in floating state, the contact area between material and reducing gas is increased, so as to significantly improve smelting
Efficiency is refined, in addition, spraying into pure oxygen to the steel-making area at horizontal tower bottom using oxygen lance, molten steel molten iron can be converted to, completed
The chemical reaction of steel-making, and the difficulty that molten iron is smelt molten steel is significantly reduced, so that steel-making is easy to carry out, and can be effective
The impurity in molten iron is removed, to obtain the steel product of high quality.
In addition, smelting process according to the above embodiment of the present invention can also have the following additional technical features:
In some embodiments of the invention, the smelting process further comprises: using first material transmission device
The pre-reduced iron ore in sand form from the intracavitary discharge of prereduction tower is accepted, and the pre-reduced iron ore in sand form is supplied to described and is restored eventually
Tower.Thus, it is possible to significantly improve efficiency.
In some embodiments of the invention, the smelting process further comprises: using second material transmission device
The drying iron ore from the intracavitary discharge of the drying tower is accepted, and the dry iron ore is supplied to the prereduction tower.By
This, can be further improved efficiency.
In some embodiments of the invention, the smelting process further comprises: being recycled using waste heat boiler from institute
State the heat in the flue gas of the intracavitary discharge of drying tower.Thus, it is possible to realize maximally utilizing for resource.
In some embodiments of the invention, the smelting process further comprises: using pig moulding machine to the steel-making
The molten steel that area obtains is formed, to obtain steel ingot.Thus, it is possible to which molding steel ingot is prepared.
In some embodiments of the invention, the smelting process further comprises: using and is located at the ironmaking area
In the hot wind fine coal spray on the side wall of the intersection in the slag blanket area, the coke layer area or the slag blanket area and coke layer area
Mouth sprays into hot wind fine coal into the ironmaking area at the horizontal chamber furnace (oven) bottom, to restore the oxidation of the iron in the slag blanket area and coke layer area
Object.Thus, it is possible to further increase efficiency.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of smelting equipment according to an embodiment of the invention；
Fig. 2 is the structural schematic diagram of the smelting equipment of another embodiment according to the present invention；
Fig. 3 is the flow diagram of smelting process according to an embodiment of the invention；
Fig. 4 is the flow diagram of the smelting process of another embodiment according to the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In one aspect of the invention, the invention proposes a kind of smelting equipments.The present invention is implemented below with reference to Fig. 1-2
The smelting equipment of example is described in detail.According to an embodiment of the invention, the equipment includes:
Horizontal tower bottom 100: according to an embodiment of the invention, horizontal tower bottom 100 limits molten bath 10, molten bath 10 is along level side
To formation spaced apart steel-making area 11 and ironmaking area 12, ironmaking area edge sequentially forms iron pelagic division 13,14 and of slag blanket area from bottom to top
Coke layer area 15, steel-making area 11 are connected by molten iron outlet 16 with iron pelagic division 13.
According to a particular embodiment of the invention, the width in the molten bath at horizontal tower bottom is 8m, and a length of 23.6m, liner is water cooling carbon
Brick or silicon carbide brick.
Tower 200 is restored eventually: according to an embodiment of the invention, reduction tower chamber 20 eventually is limited in reduction tower 200 eventually, it is whole to restore
The lower end of tower 200 is connected with the top in the ironmaking area 12 at horizontal tower bottom, for being connected to ironmaking area and eventually reduction tower chamber.
According to an embodiment of the invention, the top of reduction tower 200 is equipped with the first concentrate burner 21, tool according to the present invention eventually
Body embodiment, the first concentrate burner 21 be used for eventually reduction tower 200 in supply pre-reduced iron ore in sand form and including coke, fine coal and
The fuel of oxygen.Reducing gas can be provided for reduction process by the imperfect combustion of fuel as a result, to complete to iron ore
The reduction of sand.
According to an embodiment of the invention, eventually reduction tower can be rounded, and its internal diameter be 4.0~7.0m, a height of 5.5~
8.0m, liner can be water cooling high-alumina brick or water cooling ambiguity refractory material.
Oxygen lance 300: according to an embodiment of the invention, oxygen lance 300 is embedded in steel-making area from 100 upper end of horizontal tower bottom
11.Pure oxygen is sprayed into the steel-making area at horizontal tower bottom using oxygen lance as a result, molten iron can be converted to molten steel, completes steel-making
Chemical reaction, and significantly reduce the difficulty that molten iron is smelt molten steel, so that steel-making is easy to carry out, and can effectively remove
Impurity in molten iron, to obtain the steel product of high quality.
First flue 400: according to an embodiment of the invention, the ironmaking area of the bottom end of the first flue 400 and horizontal tower bottom 100
12 top is connected, to export the flue gas that whole reduction process generates.
Prereduction tower 500: according to an embodiment of the invention, limiting prereduction tower chamber 50, prereduction in prereduction tower 500
The upper end of tower chamber 50 is connected with the upper end of the first flue 400.Thus, it is possible to which the high-temperature flue gas that whole reduction process is generated is gone back to pre-
Material in former tower carries out pre-reduction treatment.
According to an embodiment of the invention, the top of prereduction tower 500 is equipped with the second concentrate burner 51, tool according to the present invention
Body embodiment, the second concentrate burner 51 are used to supply dry iron ore into prereduction tower 500.
According to an embodiment of the invention, prereduction tower can be rounded, and its internal diameter is 4.0~7.0m, a height of 5.5~
8.0m, liner can be water cooling high-alumina brick or water cooling ambiguity refractory material.
Second flue 600: according to an embodiment of the invention, the lower end of the lower end of the second flue 600 and prereduction tower chamber 50
It is connected, to export the secondary low-temperature flue gas of pre-reduction generation.
Drying tower 700: according to an embodiment of the invention, drying tower chamber 70 is limited in drying tower 700, drying tower chamber 70
Upper end is connected with the upper end of the second flue 600.Thus, it is possible to which the secondary low-temperature flue gas for generating prereduction tower is to object in drying tower
Material is dried.
According to an embodiment of the invention, the top of drying tower 700 is equipped with wet iron ore entrance 71.It is according to the present invention specific
Embodiment, wet iron ore entrance 700 can be equipped with wet ore in sand form throwing machine.Thus, it is possible to effectively remove the impurity in wet iron ore.
According to a particular embodiment of the invention, the original moisture content of wet iron ore can be≤18wt%, dry iron ore
The moisture content of sand is lower than < 1.0wt%.
According to an embodiment of the invention, iron ore can be at least one of bloodstone and magnetic iron ore, according to the present invention
Specific embodiment, the Iron grade of bloodstone can be 50~52wt%, and the Iron grade of magnetic iron ore can be 60~65wt%.By
This, can be prepared the steel products of high quality.
According to a particular embodiment of the invention, in iron ore can containing in wolframite, scheelite and lateritic nickel ore extremely
Few one kind.Thus, it is possible to the product of the different trades mark be prepared as needed, for example, the pig iron, steel or steel alloy can be prepared.
Third flue 800: according to an embodiment of the invention, 800 lower end of third flue is connected with the lower end of drying tower chamber 70,
To export the low-temperature flue gas of drying process generation.
Smelting equipment according to an embodiment of the present invention by by the reduction of end of iron ore, prereduction and drying process in one
Change and carried out in equipment, the high-temperature flue gas that reduction tower generates eventually is allowed to carry out pre-reduction treatment to the material in prereduction tower,
And the secondary low-temperature flue gas that prereduction tower generates can be dried material in drying tower, realize recycling for flue gas, into
And the discharge of pernicious gas is substantially reduced, to realize clean manufacturing, and by the way that flue gas recirculation utilization can be significantly improved
The utilization rate of flue gas, and then it is substantially reduced the investment of energy consumption, to significantly reduce smelting cost, while in each reaction process
In, so that material is in floating state, the contact area between material and reducing gas is increased, so as to significantly improve smelting
Efficiency is refined, in addition, spraying into pure oxygen to the steel-making area at horizontal tower bottom using oxygen lance, molten steel molten iron can be converted to, completed
The chemical reaction of steel-making, and the difficulty that molten iron is smelt molten steel is significantly reduced, so that steel-making is easy to carry out, and can be effective
The impurity in molten iron is removed, to obtain the steel product of high quality.
With reference to Fig. 2, the smelting equipment of the embodiment of the present invention further comprises:
First material transmission device 900: according to an embodiment of the invention, first material transmission device 900 is gone back with pre- respectively
Former tower 500 is connected with the first concentrate burner 21, and is used to accept the pre-reduced iron ore in sand form being discharged out of prereduction tower chamber 50, and will
Pre-reduced iron ore in sand form is supplied to reduction tower 200 eventually.Thus, it is possible to further increase efficiency.
According to an embodiment of the invention, first material transmission device is conveyed using concentrated phase strength.Thus, it is possible to significant
Reduce energy consumption.
Second material transmission device 1000: according to an embodiment of the invention, second material transmission device 1000 respectively with it is dry
Dry tower 700 is connected with the second concentrate burner 51, and for accepting the drying iron ore being discharged out of drying tower chamber 70, and will dry
Iron ore is supplied to prereduction tower 500.Thus, it is possible to further increase efficiency.
According to an embodiment of the invention, second material transmission device also uses concentrated phase strength to be conveyed.Thus, it is possible into
One step reduces transport energy consumption.
Waste heat boiler 1100: according to an embodiment of the invention, waste heat boiler 1100 is connected with the upper end of third flue 800,
And for recycling the heat in the flue gas being discharged through third flue 800.Use waste heat boiler can be with the heat in recovered flue gas as a result,
Amount, the water vapour that generates can be used for generating electricity after absorbing heat, to improve heating efficiency, while waste heat boiler can be with
Flue dust in recovered flue gas realizes clean manufacturing it is possible thereby to achieve the purpose that purifying smoke.
Pig moulding machine 1200: according to an embodiment of the invention, pig moulding machine 1200 is connected with the steel-making area 11 at horizontal tower bottom 100,
And formed for obtaining molten steel to steel-making area 11, to obtain steel ingot.
According to an embodiment of the invention, ironmaking area 12 is in slag blanket area 14, coke layer area 15 or slag blanket area 14 and coke
Hot wind fine coal nozzle 17 can be equipped on the side wall of the intersection in floor area 15.According to a particular embodiment of the invention, hot wind fine coal
Nozzle can have multiple.Thus, it is possible to the ferriferous oxide in slag blanket area and coke layer area be restored, to further increase smelting effect
Rate.
According to an embodiment of the invention, can according to the component requirements of the pig iron of the various different trades mark, steel or steel alloy, from
Hot wind fine coal nozzle supplies the self-contained additive of alloying component to ironmaking area, such as self-contained additive can be dilval, vanadium
Nitrogen alloy.
According to a particular embodiment of the invention, which produces stainless steel amount per year up to 1,200,000 tons, and producing vanadium nitrogen steel per year can
Up to 1,000,000 tons.
In the second aspect of the invention, the invention proposes a kind of smelting processes.According to an embodiment of the invention, the smelting
Smelting method is carried out using above-mentioned smelting equipment.It is carried out in detail below with reference to the smelting process of Fig. 3-4 pairs of embodiment of the present invention
Description.According to an embodiment of the invention, this method comprises:
S100: by the first concentrate burner from eventually reduction tower top to eventually reduction the intracavitary penetrating pre-reduced iron ore in sand form of tower with
And the fuel including coke, fine coal and oxygen；
S200: iron ore is dried from the top of prereduction tower to the intracavitary penetrating of prereduction tower by the second concentrate burner；
S300: wet iron ore is added from the top of drying tower to drying tower is intracavitary by wet iron ore entrance；
S400: oxygen is sprayed into the steel-making area at horizontal tower bottom by oxygen lance；
S500: the intracavitary flue gas of reduction tower eventually is delivered in prereduction tower at the top of the first flue so as to prereduction
The intracavitary drying iron ore of tower carries out prereduction；
S600: the intracavitary flue gas of prereduction tower is delivered in drying tower so as to drying tower chamber at the top of the second flue
Interior wet iron ore is dried.
Smelting process according to an embodiment of the present invention by by the reduction of end of iron ore, prereduction and drying process in one
Change and carried out in equipment, the high-temperature flue gas that reduction tower generates eventually is allowed to carry out pre-reduction treatment to the material in prereduction tower,
And the secondary low-temperature flue gas that prereduction tower generates can be dried material in drying tower, realize recycling for flue gas, into
And the discharge of pernicious gas is substantially reduced, to realize clean manufacturing, and by the way that flue gas recirculation utilization can be significantly improved
The utilization rate of flue gas, and then it is substantially reduced the investment of energy consumption, to significantly reduce smelting cost, while in each reaction process
In, so that material is in floating state, the contact area between material and reducing gas is increased, so as to significantly improve smelting
Efficiency is refined, in addition, spraying into pure oxygen to the steel-making area at horizontal tower bottom using oxygen lance, molten steel molten iron can be converted to, completed
The chemical reaction of steel-making, and the difficulty that molten iron is smelt molten steel is significantly reduced, so that steel-making is easy to carry out, and can be effective
The impurity in molten iron is removed, to obtain the steel product of high quality.
With reference to Fig. 4, the smelting process of the embodiment of the present invention further comprises:
S700: the pre-reduced iron ore in sand form from the intracavitary discharge of prereduction tower is accepted using first material transmission device, and will be pre-
Reduced iron ore in sand form is supplied to reduction tower eventually；
S800: the drying iron ore from the intracavitary discharge of drying tower is accepted using second material transmission device, and will dry iron
Ore in sand form is supplied to prereduction tower；
S900: the heat from the flue gas of the intracavitary discharge of drying tower is recycled using waste heat boiler；
S1000: it is formed using the molten steel that pig moulding machine obtains steel-making area, to obtain steel ingot
S1100: using the intersection for being located at ironmaking area and being in slag blanket area, coke layer area or slag blanket area and coke layer area
Hot wind fine coal nozzle on side wall sprays into hot wind fine coal into the ironmaking area at horizontal chamber furnace (oven) bottom, to restore slag blanket area and coke layer area
Interior ferriferous oxide.
Specifically, by pre-reduced iron ore in sand form and fuel containing coke, fine coal and oxygen from the of reduction tower upper end eventually
One concentrate burner be added eventually reduction tower it is intracavitary so that non-complete combustion of fuel generate reducing gas be in floating state it is pre-
Reduction reaction occurs for the contact of reduced iron ore in sand form, and the iron in iron ore is reduced, and reaction product enters horizontal tower bottom, and horizontal
Furnace bottom forms iron pelagic division, slag blanket area and coke layer area from the bottom to top, and molten iron, which is constantly exported from molten iron, enters steel-making area, then
Steel-making oxygen is sprayed into the molten iron in steel-making area by oxygen lance, removes the impurity component of molten iron, so that molten steel is formed, molten steel
Steel ingot, while slag blanket area, coke layer area or slag blanket area by being located at horizontal chamber furnace (oven) bottom are obtained after pig moulding machine carries out forming processes
Hot wind fine coal nozzle on side wall between coke layer area sprays into hot wind fine coal into slag blanket, so that remaining in slag blanket do not fill
The iron ore of reduction is divided further to restore, while a large amount of high temperature with reducibility gas that reduction tower chamber and ironmaking area generate eventually
Flue gas carries out in prereduction tower through the first flue, is in floating state to what is sprayed into from the second concentrate burner of prereduction tower upper end
Drying iron ore contact carry out pre-reduction treatment, obtained pre-reduced iron ore in sand form through first material transmission device supply to eventually also
Carry out whole reduction treatment in former tower, secondary low-temperature flue gas generated by prereduction tower enters in drying tower through the second flue and from drying
The wet iron ore contact in floating state of the penetrating of tower upper end is dried, and obtained drying iron ore is through the second object
Material transmission device, which is supplied to progress in prereduction tower and reduction treatment, the low-temperature flue gas of generation, enters waste heat pot through third flue
Furnace, the flue-gas temperature obtained by waste heat recovery processing is lower, can recycle after purified treatment.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (11)
1. a kind of smelting equipment characterized by comprising
Horizontal tower bottom, the horizontal tower lowest limit make molten bath, and the horizontally spaced open form in molten bath integrally changes arrangement
Area and ironmaking area are made steel, the ironmaking area edge sequentially forms iron pelagic division, slag blanket area and coke layer area, the steel-making from bottom to top
Area is exported by molten iron to be connected with the iron pelagic division；
Reduction tower eventually, described restore eventually limit reduction tower chamber eventually in tower, the lower end and the horizontal tower bottom of the tower of reduction eventually
Ironmaking area top be connected, it is described eventually reduction tower top be equipped with the first concentrate burner, first concentrate burner be used for
Supply pre-reduced iron ore in sand form and the fuel including coke, fine coal and oxygen in the tower of reduction eventually；
Oxygen lance, the oxygen lance are embedded in the steel-making area from horizontal tower bottom upper end；
First flue, the bottom end of first flue are connected with the top in the ironmaking area at the horizontal tower bottom；
Prereduction tower limits prereduction tower chamber, the upper end of the prereduction tower chamber and first cigarette in the prereduction tower
The upper end in road is connected and the top of the prereduction tower is equipped with the second concentrate burner, and second concentrate burner is used for described pre-
It restores and supplies dry iron ore in tower；
Second flue, the lower end of second flue are connected with the lower end of the prereduction tower chamber；
Drying tower limits drying tower chamber, the upper end of the upper end of the drying tower chamber and second flue in the drying tower
It is connected and the top of the drying tower is equipped with wet iron ore entrance；
Third flue, third flue lower end are connected with the lower end of the drying tower chamber；
First material transmission device, the first material transmission device respectively with the prereduction tower and first concentrate burner
It is connected, and is supplied for accepting the pre-reduced iron ore in sand form from the intracavitary discharge of prereduction tower, and by the pre-reduced iron ore in sand form
Tower is restored eventually to described；And
Second material transmission device, the second material transmission device respectively with the drying tower and the second concentrate burner phase
Even, and for accepting the drying iron ore from the intracavitary discharge of the drying tower, and the dry iron ore is supplied to described pre-
Restore tower.
2. smelting equipment according to claim 1, which is characterized in that further comprise:
Waste heat boiler, the waste heat boiler are connected with the upper end of the third flue, and arrange for recycling through the third flue
The heat in flue gas out.
3. smelting equipment according to claim 1, which is characterized in that further comprise:
Pig moulding machine, the pig moulding machine are connected with the steel-making area at the horizontal tower bottom, and for the steel-making area obtain molten steel into
Row molding, to obtain steel ingot.
4. smelting equipment according to claim 1, which is characterized in that further comprise:
Hot wind fine coal nozzle, the hot wind fine coal nozzle be set to the ironmaking area be in the slag blanket area, the coke layer area or
On the side wall of the intersection in slag blanket area and coke layer area described in person.
5. smelting equipment according to claim 1, which is characterized in that the wet iron ore entrance is equipped with wet ore in sand form material casting
Machine.
6. a kind of iron smelting method using smelting equipment as described in claim 1 characterized by comprising
The intracavitary penetrating prereduction iron ore of tower is restored eventually to described from the top of the tower of reduction eventually by first concentrate burner
Sand and fuel including coke, fine coal and oxygen；
Iron ore is dried from the top of the prereduction tower to the intracavitary penetrating of the prereduction tower by second concentrate burner；
Wet iron ore is added from the top of the drying tower to the drying tower is intracavitary by the wet iron ore entrance；
Oxygen is sprayed into the steel-making area at the horizontal tower bottom by oxygen lance；
The intracavitary flue gas of the tower of reduction eventually is delivered in the prereduction tower at the top of first flue so as to institute
It states the intracavitary drying iron ore of prereduction tower and carries out prereduction；And
The intracavitary flue gas of the prereduction tower is delivered in drying tower at the top of second flue so as to the drying
The intracavitary wet iron ore of tower is dried.
7. smelting process according to claim 6, which is characterized in that further comprise: using first material transmission device
The pre-reduced iron ore in sand form from the intracavitary discharge of prereduction tower is accepted, and the pre-reduced iron ore in sand form is supplied to described and is restored eventually
Tower.
8. smelting process according to claim 6, which is characterized in that further comprise: using second material transmission device
The drying iron ore from the intracavitary discharge of the drying tower is accepted, and the dry iron ore is supplied to the prereduction tower.
9. smelting process according to claim 6, which is characterized in that further comprise: being recycled using waste heat boiler from institute
State the heat in the flue gas of the intracavitary discharge of drying tower.
10. smelting process according to claim 6, which is characterized in that further comprise: using pig moulding machine to the steel-making
The molten steel that area obtains is formed, to obtain steel ingot.
11. smelting process according to claim 6, which is characterized in that further comprise: using and be located at the ironmaking area
In the hot wind fine coal spray on the side wall of the intersection in the slag blanket area, the coke layer area or the slag blanket area and coke layer area
Mouth sprays into hot wind fine coal into the ironmaking area at the horizontal chamber furnace (oven) bottom, to restore the oxidation of the iron in the slag blanket area and coke layer area
Object.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2014105219547 | 2014-09-30 | ||
| CN201410521954 | 2014-09-30 |
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| CN109880955B (en) * | 2019-04-17 | 2021-01-08 | 中国恩菲工程技术有限公司 | Smelting method and smelting device for treating iron-based multi-metal ore material in short process |
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| JP4499772B2 (en) * | 2007-09-28 | 2010-07-07 | パンパシフィック・カッパー株式会社 | Inspection hole structure of flash furnace |
| CN101956035B (en) * | 2010-05-20 | 2012-05-23 | 莱芜美澳冶金科技有限公司 | Iron-containing material slag bath smelting reduction steelmaking technical method and device |
| SE536291C2 (en) * | 2012-03-08 | 2013-08-06 | Valeas Recycling Ab | Iron reduction process and device therefore |
| CN102690919B (en) * | 2012-06-01 | 2015-05-27 | 中国瑞林工程技术有限公司 | Flash smelting method of iron |
| CN103993115B (en) * | 2014-04-22 | 2018-02-02 | 北京闪铁科技有限公司 | Dry integrated with reduction flash ironmaking equipment and iron smelting method |
| CN204455172U (en) * | 2014-09-30 | 2015-07-08 | 邓淑华 | Smelting equipment |
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